The patient is epoprostenol dependent.The medication was being delivered at 0.7 ml/hr by the medfusion 3500 microinfusion pump using a 60 ml syringe with a luerlock tip attached to a microbore extension set.The patient had traveled to the cardiac catheterization laboratory and upon return, the pump, medication and iv site were assessed, and all appeared to be functioning appropriately.Approximately 4 hours later the nurse noted drops of fluid on the top of the pump as well as within the bag used to protect the epoprostenol from light.Examination of the tubing revealed a crack in the extension set at the connection between the tubing and the syringe.Because of the small volume being infused, it is difficult to determine when and how the crack occurred.The epoprostenol was restarted with a new syringe and tubing and the patient became flushed and relatively tachycardic and hypotensive and was quickly stabilized but was transferred to the cardiac intensive care unit, for closer monitoring.
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